US 12,008,948 B2
Display device
Soo Yeon Kim, Yongin-si (KR); Tae Gon Im, Yongin-si (KR); Jong Jae Lee, Yongin-si (KR); and Dae Gwang Jang, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on May 9, 2022, as Appl. No. 17/739,807.
Claims priority of application No. 10-2021-0070228 (KR), filed on May 31, 2021.
Prior Publication US 2022/0383802 A1, Dec. 1, 2022
Int. Cl. G09G 3/32 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 2300/0842 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0295 (2013.01); G09G 2330/028 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A display device comprising:
pixels;
a sensing block generating first sensing data during a first sensing period, and generating second sensing data and third sensing data during a second sensing period, the sensing block including:
sensing channels; and
at least one auxiliary sensing channel; and
a timing controller compensating first image data with second image data based on the first sensing data, the second sensing data, and the third sensing data, wherein
the sensing block generates the first sensing data corresponding to an initial channel voltage applied to each of the sensing channels and the at least one auxiliary sensing channel during the first sensing period,
the sensing block generates the second sensing data by sensing characteristic information of the pixels corresponding to an initialization voltage applied to the pixels during the second sensing period,
the sensing block generates the third sensing data corresponding to a reference voltage applied to the at least one auxiliary sensing channel during the second sensing period, and
each of the sensing channels is electrically connected to an initial channel voltage line according to an operation of an initial channel voltage switch, and
each of the sensing channels is electrically connected to a switching matrix according to an operation of a channel switch.